Source Emissions Test Report 

for Barrick Goldstrike Mines, Inc.: 

Carlin, Nevada Facility 

Multi-Metals Testing – EPA Method 29 

System 15 – Roaster Mill Circuit #1, System 16 – Roaster Mill Circuit #2, System 

18 – Roaster #1 and #2, System 19A – Roaster #1 Quench Tank, System 19B – 

Roaster #2 Quench Tank, System 61 – Carbon Reactivation Kiln #2 Drum, 

System 66A – Autoclave #1, System 66B – Autoclaves #2 and #3, System 66C – 

Autoclave #4, System 66D – Autoclaves #5 and #6, System 67A – Mercury 

Retort #1, System 67B – Mercury Retort #2, System 67C – Mercury Retort #3, 

System 68 – East and West Furnace, and System 70 – Assay Furnaces 

Report prepared for: 

Barrick Goldstrike Mines, Inc. 

P.O. Box 29 

Carlin, Nevada 89803 

Report prepared by: 

Air Pollution Testing, Inc. 

5530 Marshall Street 

Arvada, Colorado 80002 

APT Project: BAR9144
Certification

Team Leader Certification:

I certify that all of the sampling and analytical procedures and data presented in 

this report are authentic and accurate. 

Alex Mongold 

B. S. Environmental Science 

Field Team Leader / Senior Project Manager 

Reviewer Certification:

I certify that all of the testing details and conclusions are accurate and valid. 

Karl Breuer 

B. S. Earth Science / Environmental Science 

 Reviewer / Senior Technical Writer
Test Log Notes 

• System 66 exhibited high moisture content in effluent gases which can 

skew isokinetic sampling data and inhibit PM sample collection. To 

minimize this effect, volumetric flow sampling conducted at System 66 

utilized a heated (~250F) glass orifice with gas flow to monitor sample flow 

rate. This change to the reference method was approved by the State of 

Nevada for the concurrent mercury testing. 

• Some runs were repeated when the isokinetic calculations determined that 

the runs were not within acceptable isokinetic specifications and were 

therefore invalid runs. 

• Sampling at Autoclave 1 was conducted from one port due to a building 

obstructing access to the second port. This change from the reference 

method was approved for the concurrent mercury testing on-site by Mr. 

Julio Sandoval of the Nevada Division of Environmental Protection. 

• Stack gas velocity measurements at the System 67 Mercury Retort stacks 

were conducted using EPA Method 2A due to the small diameter of the 

stacks that did not allow conventional Method 5 sampling techniques. The 

velocity of the stack gas was measured before and after particulate 

sampling and the pre and post measurements were within 10% of each 

other. A cyclonic flow check was not conducted on these sources due to 

the very low flow, small stack diameter and the use of a standard pitot to 

measure flow. 

 

• The following process anomalies occurred during emissions testing: On 

7/13/09, the second test run on System 19A was paused at 13:30 for 3.6 

hours due to a plant down. On 7/13/09, the second test run on System 

19B was paused at 13:30 for 3 hours due to a plant down. On 7/23/09, 

the first test run on System 66B was paused at 10:52 for four hours due to 

a plant down. 
Table of Contents 

 

1. Introduction............................................................................................... 1

2. Summary of Results.................................................................................. 2

3. Methods............................................................................................... 18 

4. Test Program Summary......................................................................... 19 

5. Test Method Details................................................................................. 20 

Tables

Table 1.1 : Contact Personnel................................................................ 1 

Table 1.2 : Emission Unit Identification................................................... 2 

Table 2.1 : S15 Roaster Mill #1 Test Results Summary...................... 4 

Table 2.2 : S16 Roaster Mill #2 Test Results Summary...................... 5 

Table 2.3 : S18 Roaster Exhaust Test Results Summary.................... 6 

Table 2.4 : S19A Roaster #1 Quench Tank Test Results Summary...... 7 

Table 2.5 : S19B Roaster #2 Quench Tank Test Results Summary...... 8 

Table 2.6 : Carbon Reactivation Kiln #2 Test Results Summary............ 9 

Table 2.7 : S66A Autoclave 1 Test Results Summary........................ 10 

Table 2.8 : S66B Autoclave 2/3 Test Results Summary.................... 11 

Table 2.9 : S66C Autoclave 4 Test Results Summary...................... 12 

Table 2.10 : S66D Autoclave 5/6 Test Results Summary.................... 13 

Table 2.11 : S67A Mercury Retort #1 Test Results Summary.............. 14 

Table 2.12 : S67B Mercury Retort #2 Test Results Summary.............. 15 

Table 2.13 : S67C Mercury Retort #3 Test Results Summary.............. 16 

Table 2.14 : S68 East/West Furnace Test Results Summary............... 17 

Table 2.15 : S70 Assay Lab Furnace Test Results Summary.............. 18 

Table 4.1 : Sampling and Analytical Methods Summary....................... 19 
Appendices 

Testing Parameters and Sample Calculations.................................. Appendix 1 

Field Data................................................................................. Appendix 2 

Laboratory Data......................................................................... Appendix 3 

Calibration Information................................................................ Appendix 4 

Schematics.............................................................................. Appendix 5